As nouns the difference between loan and lawn
is that loan
is a sum of money or other valuables or consideration that an individual, group or other legal entity borrows from another individual, group or legal entity (the latter often being a financial institution) with the condition that it be returned or repaid at a later date (sometimes with interest) while lawn
is an open space between woods.
As a verb loan
is to lend (something) to (someone).
As a proper noun Lawn is
a town in Newfoundland and Labrador.